Differential pressure transmitters measure the difference between two points in a process and transmit that reading for storage and analysis. These transmitters are used in HVAC systems, to monitor filter performance, or in other industrial applications where pressure monitoring and maintenance are essential. Hazardous-location differential pressure transmitters are made for areas where fires or explosions may occur. Air-measuring differential pressure transmitters measure air velocity in addition to flow. Liquid-level differential pressure transmitters measure liquids and dense gases. Differential transmitters with a dial or digital display allow users to check pressure readings quickly. Wireless transmitters help eliminate wires, cables, and tripping hazards.